Hey! This post was written a long time ago, but I'm leaving it up on the off-chance it may help someone, but proceed with caution. It may not be a good idea to blindly integrate this code or work into your project, but instead use it as a starting point.

Hey! Thanks for the comment
I am right now working with an external usb SD card reader on the Pi, and I’m using an aptitude package called “usbmount” to interface with it.

This kind of thing is probably possible with an arduino, but the way I’m doing it now is much less expensive because I would need an Arduino, an SD card shield and an Ethernet shield. It would also be very difficult to interface with the Flickr API on an arduino, whereas the Pi can use the wrapper that already exists for python.

Thanks for reading, they’ll be a new post within 24 hours with a bit of progress.